759
FNCA52 TJSJ 191930
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 PM AST TUE MAY 19 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-200800-
SOUTHEAST COASTAL PLAINS-
330 PM AST TUE MAY 19 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 40 30
TEMP (24H TREND) 72 (-2) 89 (+1) 72 90
RH % (24H TREND) 88 (+6) 49 (-4) 84 47
WIND 20FT/EARLY(MPH) E 14 E 17 E 16 E 16
WIND 20FT/LATE(MPH) E 12 E 19 E 13 E 16
MIXING HGT(FT-AGL/MSL) 5590 5680
TRANSPORT WND (MPH) E 18 E 16
VENT RATE (KT-FT) 89440 79520
DISPERSION 5 5
DSI 5 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ015-200800-
SOUTHERN HILLS-
330 PM AST TUE MAY 19 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 30 30
TEMP (24H TREND) 68 (-3) 86 (+3) 68 86
RH % (24H TREND) 96 (+9) 59 (-4) 95 58
WIND 20FT/EARLY(MPH) E 13 E 13 E 12 E 12
WIND 20FT/LATE(MPH) E 13 E 14 E 13 E 12
MIXING HGT(FT-AGL/MSL) 6130 6390
TRANSPORT WND (MPH) E 17 E 14
VENT RATE (KT-FT) 91950 76680
DISPERSION 5 5
DSI 3 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ016-200800-
NORTH COASTAL PLAINS-
330 PM AST TUE MAY 19 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 40 50 40 30
TEMP (24H TREND) 71 (-2) 89 (+1) 71 89
RH % (24H TREND) 95 (+7) 56 (-5) 94 56
WIND 20FT/EARLY(MPH) E 19 E 16 E 19 E 13
WIND 20FT/LATE(MPH) E 13 E 23 E 13 E 20
MIXING HGT(FT-AGL/MSL) 5760 6120
TRANSPORT WND (MPH) E 18 E 16
VENT RATE (KT-FT) 92160 85680
DISPERSION 5 5
DSI 5 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ017-200800-
NORTHERN HILLS-
330 PM AST TUE MAY 19 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 30 60 30 50
TEMP (24H TREND) 69 (-1) 88 (+1) 68 88
RH % (24H TREND) 97 (+7) 58 (-1) 95 57
WIND 20FT/EARLY(MPH) E 17 E 14 E 16 E 11
WIND 20FT/LATE(MPH) E 10 E 20 E 9 E 16
MIXING HGT(FT-AGL/MSL) 6640 7420
TRANSPORT WND (MPH) E 15 E 10
VENT RATE (KT-FT) 86320 66780
DISPERSION 5 5
DSI 4 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ018-200800-
WEST COAST-
330 PM AST TUE MAY 19 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 10 60 10 30
TEMP (24H TREND) 72 (0) 91 (+1) 72 91
RH % (24H TREND) 93 (+6) 57 (-1) 92 56
WIND 20FT/EARLY(MPH) E 13 E 14 E 14 E 13
WIND 20FT/LATE(MPH) E 10 E 14 E 9 E 13
MIXING HGT(FT-AGL/MSL) 4970 5150
TRANSPORT WND (MPH) E 13 E 9
VENT RATE (KT-FT) 54670 41200
DISPERSION 5 5
DSI 4 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ019-200800-
EASTERN INTERIOR-
330 PM AST TUE MAY 19 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 50 50 30
TEMP (24H TREND) 69 (-3) 87 (+2) 69 87
RH % (24H TREND) 98 (+9) 60 (-3) 96 60
WIND 20FT/EARLY(MPH) E 16 E 16 E 14 E 13
WIND 20FT/LATE(MPH) E 14 E 14 E 14 E 13
MIXING HGT(FT-AGL/MSL) 6420 6850
TRANSPORT WND (MPH) E 17 SE 16
VENT RATE (KT-FT) 96300 95900
DISPERSION 5 5
DSI 4 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ022-200800-
LUQUILLO MOUNTAIN RANGE-
330 PM AST TUE MAY 19 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 50 50 50
TEMP (24H TREND) 67 (-4) 82 (+3) 68 82
RH % (24H TREND) 100 (+9) 65 (-7) 98 66
WIND 20FT/EARLY(MPH) E 12 E 13 E 11 E 12
WIND 20FT/LATE(MPH) E 11 E 13 E 12 E 12
MIXING HGT(FT-AGL/MSL) 4650 5110
TRANSPORT WND (MPH) E 16 SE 18
VENT RATE (KT-FT) 65100 81760
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ023-200800-
CENTRAL MOUNTAIN RANGE-
330 PM AST TUE MAY 19 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 20 50 20 50
TEMP (24H TREND) 66 (-2) 86 (+4) 65 87
RH % (24H TREND) 98 (+8) 61 (-3) 96 60
WIND 20FT/EARLY(MPH) E 9 E 11 E 9 E 10
WIND 20FT/LATE(MPH) E 9 E 11 E 8 E 10
MIXING HGT(FT-AGL/MSL) 7310 7920
TRANSPORT WND (MPH) E 13 SE 7
VENT RATE (KT-FT) 80410 47520
DISPERSION 5 5
DSI 2 5 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ024-200800-
CAYEY MOUNTAIN RANGE-
330 PM AST TUE MAY 19 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 50 30
TEMP (24H TREND) 68 (-2) 82 (+2) 68 82
RH % (24H TREND) 100 (+8) 67 (-1) 98 67
WIND 20FT/EARLY(MPH) E 11 E 12 E 11 E 11
WIND 20FT/LATE(MPH) E 11 E 12 E 11 E 11
MIXING HGT(FT-AGL/MSL) 5470 5740
TRANSPORT WND (MPH) E 18 E 17
VENT RATE (KT-FT) 87520 86100
DISPERSION 5 5
DSI 5 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ025-200800-
VIEQUES-
330 PM AST TUE MAY 19 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 50 50 30
TEMP (24H TREND) 74 (-2) 87 (+1) 74 87
RH % (24H TREND) 89 (+5) 59 (-4) 88 60
WIND 20FT/EARLY(MPH) E 19 E 18 E 17 E 16
WIND 20FT/LATE(MPH) E 19 E 17 E 17 E 16
MIXING HGT(FT-AGL/MSL) 4120 4120
TRANSPORT WND (MPH) E 23 E 18
VENT RATE (KT-FT) 82400 65920
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ026-200800-
CULEBRA-
330 PM AST TUE MAY 19 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 50 40 50
TEMP (24H TREND) 76 (-2) 89 (+2) 76 89
RH % (24H TREND) 89 (+7) 57 (-7) 88 57
WIND 20FT/EARLY(MPH) E 19 E 18 E 17 E 16
WIND 20FT/LATE(MPH) E 19 E 17 E 17 E 16
MIXING HGT(FT-AGL/MSL) 3890 4220
TRANSPORT WND (MPH) E 23 E 21
VENT RATE (KT-FT) 77800 75960
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ027-200800-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 PM AST TUE MAY 19 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 0 10 10 30
TEMP (24H TREND) 73 (-1) 91 (+2) 73 91
RH % (24H TREND) 86 (+6) 48 (-5) 85 42
WIND 20FT/EARLY(MPH) E 19 E 20 E 21 E 19
WIND 20FT/LATE(MPH) E 14 SE 20 E 16 SE 20
MIXING HGT(FT-AGL/MSL) 5380 5210
TRANSPORT WND (MPH) E 21 E 18
VENT RATE (KT-FT) 96840 83360
DISPERSION 5 5
DSI 5 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ001-200800-
SAINT THOMAS AND SAINT JOHN-
330 PM AST TUE MAY 19 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 40 20 40
TEMP (24H TREND) 75 (-3) 86 (+1) 74 86
RH % (24H TREND) 90 (+8) 61 (-5) 89 61
WIND 20FT/EARLY(MPH) E 19 E 19 E 17 E 16
WIND 20FT/LATE(MPH) E 19 E 18 E 19 E 16
MIXING HGT(FT-AGL/MSL) 3690 4170
TRANSPORT WND (MPH) E 23 E 22
VENT RATE (KT-FT) 73800 79230
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ002-200800-
ST CROIX-
330 PM AST TUE MAY 19 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 40 10 30
TEMP (24H TREND) 75 (-2) 87 (+1) 75 87
RH % (24H TREND) 91 (+8) 61 (-4) 89 61
WIND 20FT/EARLY(MPH) E 18 E 18 E 17 E 16
WIND 20FT/LATE(MPH) E 18 E 17 E 17 E 16
MIXING HGT(FT-AGL/MSL) 4840 4660
TRANSPORT WND (MPH) E 22 E 21
VENT RATE (KT-FT) 91960 83880
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
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